| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 8°F | 25°F | 16°F | 0.6" |
| February | 9°F | 28°F | 18°F | 0.4" |
| March | 22°F | 42°F | 31°F | 1.2" |
| April | 33°F | 56°F | 44°F | 2.2" |
| May | 45°F | 69°F | 56°F | 3.2" |
| June | 54°F | 77°F | 65°F | 5.0" |
| July | 58°F | 82°F | 70°F | 3.1" |
| August | 57°F | 79°F | 67°F | 4.4" |
| September | 48°F | 71°F | 59°F | 3.5" |
| October | 38°F | 57°F | 47°F | 2.7" |
| November | 26°F | 43°F | 34°F | 1.4" |
| December | 14°F | 28°F | 21°F | 1.6" |
| Index | Knowlton | Wisconsin | National |
| Air quality index | 34 | 69 | 42 |
| Pollution index | 4,968,600 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 205 |
| Days with good air quality | 196 |
| Days with moderate air quality | 9 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.020% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.030% |
| Mercury | 0.040% |
| City | Population | Air Quality Index | National Avg. |
| Polonia, WI | 636 | 34 | 32.0% |
| Marathon City, WI | 1,331 | 34 | 32.0% |
| Schofield, WI | 2,283 | 34 | 32.0% |
| Junction City, WI | 419 | 34 | 32.0% |
| Stevens Point, WI | 26,144 | 34 | 32.0% |
| Knowlton, WI | 78 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Sleetmute, AK | 78 | 31 | 38.0% |
| Palo Verde, CA | 78 | 45 | 10.0% |
| Glendale CDP, CO | 78 | 58 | 16.0% |
| Emison, IN | 78 | 36 | 28.0% |
| Liberty, KS | 78 | 38 | 24.0% |
| Knowlton, WI | 78 | 34 | 32.0% |
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